Supporting of outside staging used during the construction of ships or other structures



G. W. MAcILWAINE.

SUPPORTING 0F OUTSIDE STAGING USED DURING THE CONSTRUCTION OF SHIPS OROTHER STRUCTURES APPLICATION men JULY 31, I918.

1,341,335; Patented May 25,1920. I

2 SHEETS-SHEET l- O'I'LOJO DIM/g6 M G. W. MAcILWAINE.

SUPPORTING OF OUTSIDE STAGING USED DURING THE CONSTRUCTION OF SHIPS OROTHER STRUCTURES APPLICATION FILED JULY 31, me. 1,341,335, Patented May25, 1920.

a 2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

GEORGE WILSON MACILWAIN E, OF HEBBURN, ENGLAND.

SUPPORTING OF OUTSIDE STAGING USED DURING THE CONSTRUCTION OF SHIPS OROTHER STRUCTURES.

Application filed July 31, 1918.

To all whom it may concern Be it known that I, Gnonon WILSON MAC-ILWAINE, of Messrs. Palmers Shipbuilding & Iron Co. Ltd, Hebburn, in thecounty of Durham, England, have invented certain new and useful Imrovements in the Supporting of Outside Staging Used During theConstruction of Ships or other Structures, of which the following is aspecification.

The invention relates to the supporting of staging outside ships orsimilar structures during construction by means of adjustable uprightsand self-locking thwarts made of steel or other material.

The invention has for its object the provision of a device of this type,simple in form and efi'ective in use, with permanent means of adjustmentso that it can be easily adapted to suit any width of ship built.

20 The invention further insures greater safety in the support of thestaging.

According to the invention, a single steel upright or pillar is soconstructed that its base is secured to the ground, and yet can be madeto slide in or out to suit the breadth of the ship. Also the upright orpillar is provided with slots such that the thwarts can be placed at anyrequired height. The thwart is so made that when it is in position alongwith the stage planks it is properly secured; for this purpose, thethwart has a tongue piece or stop at each end which also keeps the stageplanks in place.

In one form of construction made in accordance with this invention, thepillars are formed of channel irons suitably spaced apart connectedtogether at the top and bottom, and at intervals throughout their 4length. The base is formed of plate iron stayed to the pillars by gussetplates and angle irons.

Slots are cutin the webs of the channel irons at intervals through whichthe thwarts formedof channel irons are passed, the upper flanges of thechannel irons forming the thwarts. Small lugs are fitted at the ends ofthe channels to form stops to lock the thwart in position. Planks are 50placed from thwart to thwart to forn1 a staging. The plank may overlapat the pillars.

The bases of the pillars rest on sliding strips laid on a concrete bed,the base plates 55 of the pillars being held down by the upperSpecification of Letters Patent.

Patented May 25, 1920.

Serial No. 247,607.

flanges of channel irons embedded in the concrete base.

Referring to the drawings filed herewith Figure l is a part frontelevation of one form of staging made in accordance with this invention.

Fig. 2 is a part side elevation.

Fig. 3 is a. section on line 3 3, Fig. 2.

a a are channel irons connected together by plates 6 Z) Z). The channelirons are connected to the base plate 0 by gusset plates cl (Z, c e andangle irons f g and It. The edges of the gussets are protected. andstrengthened by angle irons j j. The base plate is adapted to slide 011plates la 7c is dis posed on a bed of concrete m and is held down bychannel irons n a bolted to the concrete. In the web of the channelirons a a, slots a are cut, through which the thwarts formed of channelirons such as p are passed. The ends of the channel irons are filledwith lugs 1' to forms stops. Planks 49 s are placed from thwart tothwart to form a staging. edges may be driven between the base 0 and thechannels a a to hold the pillars securely when desired.

What I claim and desire to secure by Letters Patent is l. A stagingcoinprisinga pillar formed of two channel irons disposed vertically anda base to which the pillars are connected, slots in both said channelirons at intervals, thwarts adapted to pass through said slots, saidthwarts being provided with lugs at each end whereby they are renderedself locking, said thwarts being beveled at one end to allow them topass through the slots, said slots being substantially the same widthand depth as the thwarts, the arrangement being such that the thwartsare rigid when in position and. movable when required to be altered inrespect to height.

2. A staging comprising a pillar formed of two channel irons disposedvertically and a base to which the pillars are connected, slots in bothsaid channel irons at intervals, thwarts adapted to pass through saidslots, said thwarts being provided with lugs at each end whereby theyare rendered self locking, said thwarts being beveled at one end toallow them to pass through the slots, said slots being substantially thesame width and depth as the thwarts, said base being slidably mounted ona foundation, the arrangement being such that the thwarts are rigid whenin position and movable when required to be altered in respect to heightand the whole adapted to be slidden substantially as described.

- 3. A staging comprising steel pillars, each consisting of channelirons spaced apart and connected together, and provided with holes atintervals, and thwarts having lugs at each end adapted to be passedthrough said holes, said lugs serving to keep planks in place on thethwarts and to lock the thwarts in the pillars.

4. A staging comprising steel pillars,each consisting of channel ironsspaced apart and connected together, and provided with holes atintervals, and thwarts having lugs at each end adapted to be passedthrough said holes, said lugs acting to keep planks in place on GEORGElVILSON MacILWi XINE.

Witnesses:

N. RUSSELL, E. NIXON.

